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Abstract

A modification of hologram interferometry applicable to the study of transparent objects of
moderate optical quality has been devised which combines hologram and moiré techniques and
allows the observation of high contrast, relatively unlocalized, interferometric fringes under
conditions less critical than those of the conventional hologram interferometer. By spatially
modulating one beam of the interferometer during exposure, moiré fringes may be obtained in
the reconstruction which distort and move with optical phase changes in either beam of the
interferometer. An analysis of the origin and nature of these distortions is given and experimental
verification of the analysis is presented.

References

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